Auxiliary air device.



1. H. CRATTY & H. w. NEWELL.

AUXILIARY AIR DEVICE.

APPLICATION FILED OCT! 6, 1913.

l,148,830e Patented Aug. 3, 1915.

WITNESSES: V JNVENTORIS.

A TTORNEYAS'Q.

COLUMBIA PLAHoaIAPH ccnwAsnmn'rnm n. rv

' To all whom it may} concern:

JOHN H. GRA'ITY AND HARRY W. NEWELL, OF SPRINGFIELD, MASSACHUSETTS.

v AUXILIARY AIR nnvron.

Specification of Letters Patent.

Applicationfiled October 6, 1913. Serial No. 793,539.

Be it known that we, JoH H. ORIATTY and HARRY W. NEWELL, both citizens of the United States of Ame1-ie ,and residents of Springfield, in the county of Hampden and State of Massaehusetts," havei'nvented a new and useful i kuxiliary the'following is specification.

Our invention relates to improvements in air appliances used in'oonnection with carbureters on gasolene engines and thelike, and inits'general as ect consists of an air chamber 'ni'o'unted on" a conduit which is adapted to'be attached to and open into the intake 'wl'iioh leads fromthe c'arb'ufreter to the manifold of a1hydrooa1rbon-burning ei1-' gins, a'val've for the admissionj'of'air' to such chamber, andme'an's tolregulate orlnnit the movement oi said valve, all as herein lhe object'ofour inventionis to provide an engine off' the type noted a'bove with a simple but entirely practicable and efficient dev'icefor supplying With auxiliary air" the fuel mixture from the carbureter on its vvay to" the manifold of such engine, to the end that the engine develoiis 'more "power With less fuel, ijs'rjenderedmore flexible and caused torul'i more steadily, and is kept cooler; and thecarbureter does n'ot'need to be adjusted sofrequeiitly:

therobjeetswill'appear in the course, of thefollowing description;

We attain the'objeots and "secure'the advantages of our invention by the means illustrated in the accompanying drawings, in Which Figure 1 is an end elevation of'a device which 'embodies apractic'al formfof our invention, and shows the application of the same, and, Fig. 2, a longitudinal section through said device and aportion of an intake pipe to which it is attached.

In thefirst viewthevalveis shown open in full linesand closedby dotted'lines.

Similarfig'ures, refer tol similar parts throughout the several views;

In the first view weshow acatbure'terat 1 with a conduit or pipe, "ivhichis termda'n intake, at 2, and a portion in sectionof this pipe or intake in 'the second View. The fuel from the c'arbareteri passes on its Way to l the manifold, which latter is not Air Device, of Which herein represented, through the intake 2, and it has been demonstrated that the action and efiiciency of the engine is greatly improved and enhanced by introducing into said fuel a quantity of outside air before said fuel leaves said intake.

We will now proceedto describe in detail the device bymeans of Which-the auxiliary air is introduced into the intake 2 and the fuel therein, it being first observed that the amount or quantity of such air must be r'eg ulate'd' and controlled in order to produce the desired results." r

Tapped into or otherwise attached to the intake 2 so as to open into the same is a hori zontal pipe 3, and mountedo'n the' outer end of such pipe and opening into the same at one end is a casing 4 Which forms'or'cohstitute's' an air chamber.

Rotatably mounted on a hub 5 at the outer end of the casing 4 is a disk valve 6 Which has an opening 01? port? therein. There is an opening or port 8, in the outer end Wall of the asin 'ai to alinement with which the "port 7 in Whole or in part be brought. Projecting from the rim of the valve'og'atdiametrically opposite points, are two arms?) andlOl "A spring 1 1' has one end attached to the arm 9 and the other end 'attached to some fixed point (not shown) on the engine. The purpose of the spring 11 is to maintain the valve 6 in its closed position, that is, With the port 7 out of registry with the port 8, and to return said valve to such position.

Attached at one end to the arm 10 is an operating rod 12 for the valve, by means of Whichsaid valve is partially rotated, against the resiliency of thespring 11, and actuated into open position or With the port 7 in registry with the p'o'rt 8. The rod 12 or some connection therewith extends to the-operating point, Whie'h in' an automobile Would be the steering-post.

In order to permit the valve 6 from moving too readily on the hub 5, We provide a tension spring'13 and aregulating screw 14:; the latter being tapped intothelhub 5 and the outer en'd'of the casing'h The spring 13 is introduced betvveen the head of thescreW 14: and 'thevalveb, and so presses on said I plete ring or opened Wider in some cases Some provision is necessary to limit the movement of the valve 6, especially in opening,and such provision must comprise means of the adjustable type, because a greater supply of auxiliary air is requlred for an engine of large capacity than for one of hence the port 8 must be than in others. Atmospheric conditions, also, may require different adjustments of the valve 6. Thus it is apparent that the adjustment of said valve should have a wide range, otherwise the device would not be suitable for all kinds and sizes of engines, and capable of advantageous use under most ifnot all atmosphericvariations. I For this purpose we provide a stop 15 inthe form of an incomband which-fits the outside of the casing 4 just inside of the valve arms 9 and 10, whereit is held bymeans of a screw 16 tappedinto said stop to engage said casing, and has at the ends which are somewhat remote from each other outwardly projecting lugs 17 and 18. The parts are so arranged that the arm 10 is between and operates between the lugs 17 and 18. The lug 17 receives the arm 10, when theivalve 6 closes, and so limits the closing movement of said valve, while the lug 18 receives said arm, when said valve is opened, and so limits the small capacity,

opening movement thereof. By readjusting,

the stop 15 so as to locate the lug 18 farther to the left, the extent to which the port. 8 is opened, when the valve 6 is actuated to bring the arm 10 into contact with said lug, is decreased, since said arm sooner comes into contact with said lug, and by readjusting said stop soasto locate said lug farther to the right, the extent to which said port is opened, when said valve is actuated to bring said arm into contact with said lug, is increased, since said arm later comes into contact with said lug. The screw 16 renders such adjustment easy of accomplishment,- as

, will be readily understood.

In practice, the stop 15 is first adjusted in such a manner as to permit the valve 6 to be opened to whatever extent may be necessary toadmit the proper amountof air to the intake 2 by way of the ports 7 and 8, and casing a, and the tube 8, when the device is ready for use. The operation simply con sists in actuating the valve 6 to open it as far as the lug 18 will permit, Whenever additional air is, required for the fuel mixture, and to release said valve to the closing action of the spring 11 when it is desired to out off the extra supply of air. In closing the valve--6is brought to a stopwhen the arm 10 contacts With the lug 17 It will be observed that the size or diameter of the casing 4: is considerably larger than that ,of the tube 3. This is an important structural feature, because very much better results are obtained when the auxiliary air is first received in a comparatively large chamber and then discharged or drawn into the intake through a comparatively small conduit, than would be possible ifsuch air passed directly through a conduit of uniform size from the point where the air first enters to that where it distion to the resistance of the spring ll, and,

the latter must be strong enoughv to overcome the resistance of said spring 13to the closing operation, or to'theaction of said spring 11 in closing said valve/ More or less change or modification in the construction and arrangement of some'or'all of the parts and members of this'device, as herein shown and described, may be'made, without departing from the nature of. our invention. V What we claim as our invention, and desire to secureby Letters Patent, is j 1. The combination, in an auxiliary air device, with a tube adapted to be connected with a fuel pipe, a casing of larger diameter mounted on said tube and opening into the same, said casing having an inlet port in one end thereof and provided with a hub at such end, and a spring-actuated rotatable valve disk mounted on said casing and hub and having a port which is capable of being brought into registry with said first-mentioned port, said disk being provided with anarm, of an incomplete band adjustably mounted on said casing and provided with lugs at the ends which extend into the path of said arm, and a set-screw to hold said band in place. v

2. The combination, inan auxiliary air device, of a tube adapted to be connected with a fuel pipe, a casing of larger diameter mounted on said tube and opening into the same, said casing having an inlet port in one end thereof and provided witha hub at such end, a spring-actuated rotatable valve disk I regulating screw tapped into said hub, said arm, and a set-screw to hold said band in screw having a head, a spring arranged beplace.

tween said disk and the head of said screw JOHN H. CRATTY.

to bear against and frietionally engage said HARRY W. N EVVELL. 5 disk, an incomplete band adjustably mount- Witnesses:

ed on said casing and provided with lugs at F. A. CUTTER,

the ends Which extend into the path of said A. C. FAIRBANKS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

